Gaming token tray employing ultrasonic token counting

Details Gaming token tray employing ultrasonic token counting Gaming token tray employing ultrasonic token counting

1996-03-21

1998-04-21

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Applications

Counting animate or inanimate entities

G06M 700

Patent

active

057426562

ABSTRACT:
A chip (12) counter (10) employs an ultrasonic distance measuring system (40) to determine the number of chips in a stack (54, 56) in a chip tray (16) channel (14). A computer (32) initially stores an average chip thickness (T) and receives distance data from the ultrasonic distance measuring system indicative of a first distance (D.sub.1) to the bottom of an empty channel. To count chips, the computer repeatedly receives data from the ultrasonic distance measuring system indicative of a second distance (D.sub.2) to the top of the stack of chips in the channel. The computer subtracts the second distance from the first distance to determine a height of the stack of chips and then divides the height by the average chip thickness to provide a continuous count of the number of chips in the channel. In a multichannel chip tray, each channel has a distance measuring transducer, and a multiplexer (28) scans all the transducers to provide the computer with second distance data for all channels in the chip tray.

REFERENCES:
patent: 3825729 (1974-07-01), Menke
patent: 4026309 (1977-05-01), Howard
patent: 4755941 (1988-07-01), Bacchi
patent: 4774841 (1988-10-01), Chadwick
patent: 5021027 (1991-06-01), Bremer
patent: 5408090 (1995-04-01), Craddock
patent: 5454016 (1995-09-01), Holmes

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